SU613166A1 - Heat exchanger - Google Patents

Description

one

The invention relates to heat supply and can be used in the design of heat exchangers for hot water supply and bathroom heating.

A heat exchanger is known, comprising a housing in which sections of coaxially mounted pipes are placed; central for the heated medium and peripheral for the heating coolant, and the pipes of each section are connected in series to the pipes of adjacent sections 1. Such a heat exchanger is the closest technical solution to the described invention.

A disadvantage of the known heat exchanger is the low efficiency due to the high metal intensity of the pipes due to the fact that heat exchange takes place only through the walls of the central pipes, while the peripheral pipes serve only to seal the coolant circuit. The walls of the body do not participate in the useful heat exchange and must be performed with heat insulation, which also leads to low efficiency of the heat exchanger when using it as a heating device for bathrooms.

The purpose of the invention is to increase efficiency.

This is achieved by the fact that the series connection of the central tubes of the adjacent sections is made through the housing cavity. Besides.

The peripheral pipes are connected to the source of return heat carrier from the heating system.

FIG. 1 shows the proposed heat exchanger, top view; in fig. 2 - section aa

in fig. one; in fig. 3 shows a section BB in FIG. 2;

in fig. 4 shows a section B-B in FIG. 2; in fig. five -

a section of YYY in FIG. 2

The heat exchanger contains the case 1, in which the central pipes 2 and 3 and the peripheral pipes 4 and 5 are placed. The pipes 2 and 4, as well as pipes 3 and 5 are installed coaxially and form sections connected in series with each other. Serial connection of the Central pipe 2 and 3 is made through the cavity 6 of the housing 1 with jumpers 7 and 8. The peripheral pipes 4 and 5 are connected to each other with jumpers 9, on which the nozzle 10 is installed,

connecting the cavity of lintel 9 to the source of return heat carrier from the heating system.

Heat medium (eg water) enters through the pipe 11 into the central pipe 2

sections connected in series and supplied through jumper 7 to the lower part of cavity 6 of housing 1. Circulating in pipes 2, the medium is heated, receiving heat through the walls of pipes 2. The sections passed by the medium form

first stage of heating. In the cavity 6, the heated medium rises to the upper part of the body, is heated, washing the peripheral tubes 4 and 5, and simultaneously cools, releasing heat through the walls of the body 1 to the surrounding heat exchanger. In the upper part of the cavity 6, the heated medium through the jumper 8 enters the central pipes 3 of the series-connected sections and, after passing them, through the nozzle 12 leaves the heat exchanger and is directed to the consumer. Sections with pipes 3 form the second heating stage.

The heating fluid through pipe 13 enters non-peripheral pipes 5, in which pipes 3 are installed. Then, washing the central pipes 3 and returning heat to them, the heating coolant enters jumper 9, where it moves with return heat carrier from the heating system, which is fed into the cavity of the jumper 9 through pipe 10. From bridge 9, the coolant mixture is sent to peripheral pipes 4, in which pipes 2 are installed, washes them, gives them heat, and through pipe 14 is removed from the heat exchanger.

The heat exchanger is designed primarily for hot water supply to the bathroom or as a heating device. The operation of the heat exchanger as a heating device by maintaining the water in the cavity 6 of the housing 1 in a hot state, while not consuming hot water, is ensured by using a return heat carrier from the heating system. In this case, the supply of heating coolant is stopped and directed to other consumers.

The average temperature of the heated water in the cavity 6 is maintained such that the heat release through the external walls of the housing 1 is equal to the heat loss of the bathroom at a given internal temperature of the latter. Set average

the temperature of the heated water in the cavity b is maintained by selecting the appropriate number of sections (heated surface) of the first heating stage.

When hot water is consumed through the pipe 12, the heating coolant is supplied through the pipe 13, which, together with the return heat carrier supplied into the cavity of lintel 9 through pipe 10, heats the water to the desired temperature required for household use of the apartment or bathroom the number of sections of the second heating stage.

The described heat exchanger is economical, since the useful heat exchange takes place through all pipes 2, 3, 4 and 5 placed in housing 1 and through walls of housing 1, and also allows the use of return heat carrier from the heating system, which reduces the heat supply network.

Claims (2)

1. A heat exchanger primarily for a bathroom, comprising a housing in which sections of coaxially mounted pipes are placed: central for a heated medium and peripheral for a heating coolant, and pipes of each section are connected in series to pipes of adjacent sections, characterized in that, in order to increase efficiency The series connection of the central tubes of the adjacent sections is made through the body cavity. 2. The heat exchanger according to claim 1, from the list of drivers, by the fact that the peripheral pipes are additionally connected to the source of return heat carrier from the heating system. Sources of information taken into account in the examination 1. USSR Author's Certificate No. 316917, cl. F 28 D 7/10, 1969. 12 ten / I-A e.f